Diaphragm actuating stud for sound producers



Dec. 19, 1922.

1,438,968. D. SMFSON.A DIAPHRAGM ACTUATING STUD FOR SOUND PRODUCERS. Y

mso nov. zo. |920.

Q Qyv? C "s .B 'lll gwn/w01 jwi' ,Sampson Patented Dec. 19, 19.22.

UNITED STATES PATENT OFFICE.

DWIGHT SAMPSON, OF ADRIAN, MICHIGAN, ASSIGNOR TO SCHWARZE ELECTRICCOMPANY, OF ADRIAN, MICHIGAN, A CORPORATION OF MICHIGAN.

DIAPHRAGM ACTUATING STUD FOR SOUND PRODUCERS.

Application filed November 20, 1920. Serial No. 425,366.

To all whom t may co'ncem:

Be it known that I, DWIGHT SAMPsoN, a citizen of the United States ofAmerica, residing at Adrian, in the county of Lena-wee and State ofMichigan, have invented certain new and useful Improvements in Dia.-phragm Actuating Studs for Sound Producers, of which the following isaspecification, reference being had therein tothe accompanying drawings.

The invention relates to sound producers for signaling horns of thattype in which a flexible diaphragm is thrown into vibration by amechanical agitating member engaging a stud or pin at thel center of thediaphragm. It is the object of the present invention to form a simpleconstruction of actuating stud which is easily applicable to thediaphragm and is adapted for cooperation with the actuating. member.

In the drawings: l

Figure l is a cross-section through a diaphragm having the actuatingstudy securedl thereto;

Figure 2 is a similar view showing the actuating stud applied to acorrugated diaphragm;

Figure 3 is an enlarged perspective view of the stud member.

A is the diaphragm which in Figure 1 is Vshown as plane and Figure 2 ascorrugated. B is a small disk having a tongue C struck out from thecentral portion thereof and also provided with apertures D for thepassage of rivets or other devices' for faste-ning to the disk.Insecuring the member B to the diaphragm, a reinforcing disk E ofcorresponding size is preferably placed on the opposite side of thediaphragm and rivets F are then passed through the two disks andintervening diaphragmto secure the same together. The tongue C ispreferably inclined as shown and is adapted for cooperation with atoothed actuating member (not shown).

One advantage of my construction is that there is no danger of theactuating stud becoming disengaged from the diaphragm or tearing orotherwise engaging said diaphragm when in use. Another advantage is thatthe device may be formed by stamping at small cost and it is easilyapphed.

What I claim as my invention is:

1. The combination with a vibratory dia phragm, of an actuating membertherefor comprising a fiat portion in a` plane parallel to thediaphragm, a tongue struck out from the center of said portion, andmeans for securing the parallel portion of the diaphragm.

2. he combination with a. vibratory diaphragm, of an actuating membertherefor comprising a disk having a tongue portion struck out therefrom,and means for Securing said disk to the diaphragm.

The combination with a vibratory diaphragm, of an actuating membertherefor comprising a disk having an obliquely-arranged tongue struc-kout therefrom, and means for securing said disk to the diaphragm.

4. The combina-tion with a1 vibratory diai phragm, of an actuatingmember therefor comprising a flat member, a tongue struck out from thecenter of said member, and. means for securing said member to thediaphragm.

In testimony whereof I affix my signature.

DWIGHT SAMPSON.

